Triangle Calculator — Free Online Calculator with Step-by-Step Guide
Solve any triangle using SSS, SAS, or ASA input modes. Computes all sides, angles, area, and perimeter with dynamic SVG visualization.
✓ Formula verified: January 2026
Triangle Solver
Results below
Enter Values
Triangle Type
Scalene Acute
Angle A
44.42°
Angle B
57.12°
Angle C
78.46°
Side a
5
Side b
6
Side c
7
Perimeter
18
Area
14.7 sq units
What if your side a (opposite a) changes? 4.5 → Scalene Acute · 5 → Scalene Acute · 5.5 → Scalene Acute
Scenario Comparison
Conservative (5%)
$16,470.09
$6,470.09 interest
Your scenario (7%)
$20,096.61
$10,096.61 interest
Aggressive (10%)
$27,070.41
$17,070.41 interest
High-risk (14%)
$40,224.71
$30,224.71 interest
Best return
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Triangle Visualization
Scalene Acute
Angles
A = 44.42°
B = 57.12°
C = 78.46°
Sum = 180°
Sides & Measures
a = 5
b = 6
c = 7
Perimeter = 18
Area = 14.7 sq units
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